Registration Dossier
Registration Dossier
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EC number: 280-445-7 | CAS number: 83411-71-6
Endpoint summary
Administrative data
Description of key information
LC50 (Salmo Gairdneri, 96h) > 22 mg/l (nominal)
EC50 (Daphnia magna, 48h) > 9.9 mg/l (mean measured)
NOEC (Pseudorkirchneriella subcapitata, 72h) = 50 % (% of saturated solution) on Growth Rate
EC50 (Pseudorkirchneriella subcapitata, 72h) > 100 (% of saturated solution) or maximum water solubility on Growth Rate
NOEC (microorganisms, 3h) = 320 mg/l (nominal)
Additional information
The short-term aquatic toxicity is evaluated for three aquatic organisms: fish, aquatic invertebrates and aquatic algae.
Two studies for evaluation of acute toxicity of the substance on fish are available one on Salmo Gairdneri and one on Lepomis Macrochirus. The EC50 found are between 22 and 46 mg/l.
Studies of acute toxicity on invertebrates and algae are available. EC50 (48h) for Daphnia magna is > 9.9 mg/l and the EC50 (72h) for Pseudorkirchneriella subcapitata is above the 100 % of salurated solution or maxiumum water solublity.
The more sensitive species seems to be Daphnia. The NOEC is equal to 2.9 mg/l and the EC50 is higher than 9.9 mg/l.
The NOEC for microorganisms is found to be 320 mg/l.
The long-term aquatic toxicity is going to be evaluated for the most-sensitive species, i.e. aquatic invertebrates (Daphnia).
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